Automatic-cut-oit gas-btjbner



GEORGE B. TRYON, OF DERBY, CONNECTICUT.

AUTOMATIC-CUT-OFF GAS-BURNER.

Specification of Letters Patent.

Patented May 20, A1919.

Application filed January 30, 1919. Serial No. 273,947.

T0 all whom t may concern Be it known that I, GEORGE B. TRYON, a citizen of the United States, residing at Derby, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Automatic-Cut- Oft Gas-Burners; and l do hereby declare the following, when taken in connection with the accompanying drawings, and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application and represent, in*

Figure 1 a front view of an automatic cut-off gas burner with the parts in the closed position.

Fig. 2 a side view of the same with the burner in the open position.

Fig. 3 a top or plan view of the burner.

Fig. t a sectional view on the line 1 4 of Fig. 1.

'Fig 5 a sectional view on the line 5-5 of Fig. 2.

This invention relates to an improvement in automatic cut-oii' burners, and particularly to burners of this type which are thermostatic in action, the object of the invention being a simple arrangement of parts whereby the flow of gas to the burner tip will be automatically closed in case the light is extinguished; and the invention consists in the construction hereinafter described and particularly recited in the claims.

In carrying out my invention I employ a burner tube 6 similar in construction to an ordinary burner tube and adapted to be secured to the usual gas fixture nipple. The

upper end of the tube is slightly reduced l 1n diameter to form an annular valve seat 7. Closely tting the upper end of the burner tube is a cylindrical tip carrier 8 havin a tip 9 mounted in its upper end the tip being formed with the usual burner slot 10. The lower end of the tip carrier is formed with an annular shoulder 11 adapted to bear against the seat 7 so as to form a tight joint therewith. The lower end of the tip carrier 8 is closed by a plug 12 or otherwise, and above the plug is a port 13 opening into the tip carrier. Preferably the lower end of the plug stands above the lower end of the tip carrier so as to form a recess 14 for the reception of a spring 15 the lower end of which will rest upon the upper end of the nipple, not shown. Mounted upon the upper end of the burner tube 6 is a yoke 16 having two oppositely extending upwardly bowed arms 17 and 18 to the outer ends of which are secured expansible plates 19 and 2O the inner ends of which extend to opposite sides of the tip carrier 8. These plates are formed from relatively soft material so as to be quickly expansible under increased temperature. Connected with the tip carrier is a chain 21 which extends down through la guide eye 22 formed in the yoke 16. As herein shownvthe chain is connected with the tip carrier by providing the upper end of the chain with a hook 23 the nose 24 of which enters a slot 25 formed in one side of the tip 9, and so that the hook bears upon the upper end of the tip carrier. To ignite the burner the tip carrier is drawn downward by a pull upon the chain 21 so as to bring the lower end of the burner slot 10 in the tip 9 in line with the expansible arms 19 and 20. The supply of gas is then turned at the key in the usual manner and the gas passes the lower end of the ti carrier between the shoulder 11 and seat and ent-ers the tip carrier through the port 13 and passes to the burner tip where it may be ignited. Almost instantaneously heat from the flame expands the plates 19 and 20 so as to cause them to iirmly grip the tip carrier and hold it in its depressed position, which position it will retain as long as the burner is lighted. If for any reason the flame is extinguished, the plates 19 and 20 will almost instantaneously retract, relieving frictional pressure against the tip carrier so as to allow the tip carrier to rise under action of the spring 15 and bring the shoulder 11 into engagement with the seat 7 so as to prevent the passage of gas to the burner tip.

The parts of my improved burner are simple and readily formed by tools commonly employed in the manufacture of ordinary burners, and the expansible plates may be secured to the arms of the yoke by spot welding, riveting or other means so that the device may be produced at a low cost for manufacture, does not increase the size of the burner tube, and produces an automatic cut-ofi which is positive in action.

I claim 1. The combination with a burner tube formed with an internal valve seat, a tip carrier slidably mounted in said burner tube and formed with a shoulder adapted to ooaot with the said valve seat, the lower end of the tip carrier closed and the tip carrirformed with a port above the closed end, a yoke secured to the upper end of the burner tube, said yoke formed with oppositely extending arms, and expansible plates secured to said arms and extending inward toward the tip carrier and adapted when expanded to grip and hold the said tip carrier in a depressed position.

2. The combination with a burner tube formed with an internal valve seat, a tip earrie'r slidably mounted in said burner tube and formed with ashoulder adapted to eoact with the sai'd valve seat, the lower end of the tip carrier closed and the tip carrier formed with a port above the closed end, a yoke secured to th'e upper end of the burner tip, said yoke formed with oppositely extending arms, expansible plates secured to said arms and extending inward toward the tip Carrier and adapted when expanded to grip and hold the said tip carrier in a depressed position, and a chain connected with the upper end oi' the tip carrier by means of which the said tip carrier may be inoved downward into the burner tube.

3. The combination with a burner tube,

of a tip carrier mounted in the upper end thereof, a tip mounted in the upper end of the carrier and formed with a vertical groove, the lower end of the tip carrier ooacting with the burner tube to close the passage between them, a port in the tip Carrier, a yoke secured to the burner tube, expansive plates secured to said yoke and extending toward the tip tarrier and adapted to be expanded so as to firmly grip the said carrier, and a chain provided at its upper GEORGE B. TRYON.

Witnesses EVERETT H. KNEEN.,

F. W. SHRIER.

Copie! of this patent may be obtained for ve cents each, by addressing the "Commissioner of Patents,

Washington, D. C. 

